Engraving-machine.



No. 629,2"). I Patentad July 18, 1899.

H. H. RUBEN.

ENGBAVING MACHINE.

i nmion Bled on. so, 1595.; (No Modal.)

4 Silents-Sheet .i

m: scams PETERS cu moroumo. wunms'mn, u c.

No. 629,2!0. Pater nt ed July l8, I899. n. m. RUBEN. v

ENGBAVING MACHINE.

V (Applicltion flied on! 20, 1898.,-

(llo Moiiel.) 4 Shasta-Sheet 2,

No. 629,2!0. Patented luly l8, I899. H. M. RUBEN. EIIGBMHNG IMMUNE.

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(Ila Model.)

1 Patented lulyJB, 1899. H. I. RUBEN. Y

No. 629,2l0.

EuaaAvme Momma.

(Appfimion med Oct. 20, 189B.)

4 Shoots-Sheat 4.

(No Model.)

dex-finger used to trace the design or form of width and adapted to be conveniently sup bracket is a horizontal trunnion-bearin g slot UNITED' STATES, PATENT OFFICE.

HENRY M. RUBEN, on NEW HAVEN, CONNECTICUT;

.EIVNGRAVI NCi-MACHIN E.

SPECIFICATION forming part of Letters Application filed October 20', 1398.

To 0.1% whom, it may concern.-v Be it known that I, HENRY M. RUDE-N, of New Haven, in the county of New Haven and State of Connecticut, have invented anew Improvement in Machines for Engraving, Milling, 850.; andI do hereby declare the,following, when taken in connection with the ac companying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in e Figure 1, a side View, partially in section, of a machine embodying my invention; Fig. 2, a top or plan view of the same; Fig. 3, an end view; Fig.4, a sectional View on the line 4 4, looking in the direction of the arrow 4 of Fig. 1 Fig. 5, a sectional view on the line 5 5 of Fig. 2. i

This invention relates to an improvement in machines for engraving, milling, modeling, die-sinking, &c., in which a pattern is employed containing the design or shape of the article to be milled, engraved, or otherwise formed or ornamented, and which pattern is reproduced either of the same sizeor larger or smaller, as may be desired.

The object of this invention is a simple construction and arrangement of mechanism whereby the movement of the pointer or inthe pattern will be positively duplicated by the milling or engraving tool, so as to reproduce that pattern and it consists in the construction and arrangement of parts, as will be hereinafter described, and particularly recited in the claims.

The bed A is of the desired length and ported. At each end of the bed is fixed an upright bracket B. Near the top of each h, and below this and parallel with it is a horizontal yoke-clampingskt c. In each trunnion-bearing slot 1) is a trunnion-.bearin g slide 12, formedwith an outwardly-projecting arm Patent No. 629,210, dated July 18, 1899.

SerialNo. 694,132. on model.)

spective ends of a yoke, which comprises a long central shaft-bearing F and chuck-carriers F F At each end of the yoke is attached a plate G, depending downward at right angles to the chuck-carriers, and each plate is formed onits inner 'face with a lug g, through which screws g extend upward into the chuck-carrier, whereby the plates are rigidly connected with the yoke. Each plate is formed with a segmental lug G, projecting outward to the inner face of the brackets B, and in each of these. lugs is a segmental slot 72., forming the arc of a circle of which the center of the cm union is the center,and these slots in register with the horizontal slots 0 in the bracket, so that these arms and the brackets maybe connected by a set-screw h, which extends through the segmental slot and through the slot 0 in the bracket, and so that while the yoke may be free to be rocked on its trunnions it may also be locked in any desired position. In each chuck-holder is mounted a chuck, the pattern-holding chuck I beingformed with a long hollow stem J, carrying at its lower end a bevel-pinion K, which meshes into a bevel-pinion K, mounted on one end of the shaft L in the bearing F.

At the opposite end of the said shaft L is a bevel-pinion K meshing into apinion K formed at the lower end of the work-holding chuck I, and so that the rotation of the pattern-chuck will cause the work-holdingch uck to be rotated in the same direction.

On opposite sides of the bed are mounted vertical brackets M N. The inner face of the bracket N is formed with a wide underout projection N, forming a vertical guide for a bridge 0, which on the side toward the bracket N is formed with a wide undercut groove 0', corresponding to the projection N,

is formed with a hole or perforation P 'for the S S S and S are connected with the long links S S and are respectively connected with rotatable posts T T, projecting upward from carriages T T which are longitudinally guided in undercut grooves U, formed in opposite ends of the bridge. To the upper end of the post T is pivotally connected an arm V, which projects outward over the patternholding chuck I, and at its end carries an inden or pointer W. To the post T a corre sponding armV is pivoted, which at its outer end is adapted to receive a milling orengrav ingtool W, which maybe operated through a flexible connection X in the usual. manner. These arms are connected by rods Y Y,which are respectively mounted and guided inboarings formed at the upper edges of the arms, and at theirinner ends are bifurcated and the ends of one arm secured to the sides and the ends of the other arm secured to the i top and bottom of a ball Y forming a gim- Dal-joint. Also connected to the sides of the ball is'a yoke lo, formed with a depending pin it, which extends through a slide m, which is mounted in transverse guides n n, whichare held above the bridge by supports 0 o m ounted thereon.

The pattern to be reproduced is placed in the pattern holding chuck I, and if it be formed with a shank or stemlike a door- 1 knob,for instancethe stem may pass into the hollow stem J of the chuck. This pattern is clamped in the chuck in any desired manner. The piece of metal to be milled, engraved, or otherwise operated upon is similarly fixed in theiwork-holdin g chuck I. The index-finger or pointer W is then pressed downward onto the surface of the pattern in the chuck, and in thus depressing the index-finger the inner end of the rod Y is lifted, which lifts the inner end of. the rod Y, and hence depresses the working tool W, and as the arm V is drawn outward it moves the links S and S, which also force the arm V outward to a corresponding distance. If the arm V be turned to the right or left, the arm V will be correspondingly turned, and the stem 7: being held by the carriage M in the guides n will always keep the ends of the rods Y Y midway be tween the arms V V, said arms being free to rock upon the upper ends of the posts T T, which in turn rotate in the carriages T T The chucks are readily rotated by hand, and the rotation of the pattern-chuck I imparts a corresponding rotation to the work-holding chuck I through the bevel-gears and rockshaft, as already described. By means of the adjusting-screw D the bearing for the chuckcarrying yoke may be moved from side to side, and by loosening the cndof the setscrew 72 the yoke itself may be rocked so as to incline the chuck I in either direction. The bridge, and hence the arms and other mechanism carried thereby, may be raised or lowered through the adj ustingscrew Q, whereby the horizontal position of the arms V V may be adj usted.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination witha horizontal bed of two brackets, one at each end of the bed 1 and in each of which a chuck-carrying yoke is pivotally mounted, chucks supported in carriers at opposite ends of the yoke, and con nected by a shaft and gearing, whereby the movement of one is imparted to the other, a bridge over saidibed and vertically adjustable with relation thereto, and two arms pivotally mounted above said bridge, and coupled to gethcr whereby the movement of one imparts a corresponding movement to the other, one of said arms adapted to carry an operatingtool, substantially-as described.

2. The combination with a horizontal bed of a bracket mounted ateach end thereof, and each formed with a transverse trunnion-bear,-

1ng slot, a trunnion-bearing in said slot, a

yoke formed at opposite ends with trunnions,

extending into said bearings, said yoke provided at opposite ends with chuck-holders, chucks in said holders and connected with each other, whereby movement .of'one is imparted to the other, a bridge over said bed, and verticallyadj us table with relation thereto, lazy-tongs links pivotally mounted on said bridge, and engaging at opposite ends with posts which are longitudinally guided on the bridge, arms pivotally mountedat the upper ends of said posts, rods mounted in the upper ends of said arms and coupled together by a gimbal-joint, a transversely-movable guide below said joint, and a pin depending from the joint into said guide, one of said arms carrying an operating-tool,substantially as described.

3. The combination with a horizontal bed, of a vertically-arranged bracket at the opposite ends thereof, said brackets formed near their upper ends with transverse trunnionbearing slots, and with yoke-clamping slots parallel with the trunnion-bearing slots, a trunnion-bearing in said trunnion-bearing slots, a yoke provided at opposite ends with trunnions extending into said bearings, said yokes having downwardly-depending plates at their respective ends, a segmental slot in each of said plates, and means for clamping said plates to the brackets, chucks mounted in the respective ends of said yoke, and connections between them, whereby movement of one is imparted to the other, brackets so,- cured to the opposite sides of said bed, a bridge extending across said bed and supported by said brackets with which it is adjustably connected, two carriers longitudinally movable in the upper surface of said hridge, and an upwardly-extending post mounted in each carrier, lazy-tongs connecting said posts and pivotally mounted on the versemoi 'ement across said bridge, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

' HENRY M. RUBEN.

' Witnesses:

LILLIAN D. KELSEY, FRED. O. EARLE. 

